Seriously, there's a great community of artists here willing to give advice and send tutorials and stuff if you'd like to improve.
Honestly I'd say do something you think you'd really enjoy. Like skydiving. Or shepherding.
Play better video games.
Try and start a Socialist revolution. Get your friends involved too!
Not my words Carol, the words of Top Gear magazine.
Happy Birthday to Me
READ!
(Or listen to an audio book if you're more of an auditory learner.)
I have many suggestions of what to read - if you require them, let me know.
Reading may also inspire you to write a story, which I wholeheartedly encourage as well.
Start playing a musical instrument (piano is a good idea)
Learn foreign languages.
It rocks.